Control mechanism for accounting



July 7,' 1953 R. A. CHRISTIAN :TAL

CONTROL NEOHANISM FOR ACCOUNTING MACHINES Original Fiied Dec@ 6, 1947 FIG.I

12 Shehts-Sheet l INVENTORS RAYMOND A. CHRISTIAN 8| JESSE R. GANGER THEIR ATTORNEYS July 7, 1953 R A. CHRISTIAN ETAL CONTROL MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec. 6, 1947 INVENTORS RAYMOND A. CHRISTIAN 8| JESSE R. GANGER BY a A( ,W

THEIR ATTORNEYS July 7, 1953 R..-,A.cHR1s1'-|AN Erm. 2,644,536

CONTROL MECHANISM FOR" ACCOUNTING Y MACHINES OriginallFiled Dec. 6;- 194'?l 12 Sheetsf-Sheet 5 FIG.7

INVENTORS RAYMOND A. CHRISTIAN 8s JESSE R. GANGER THEIR ATTORNEYS July 7, 1953 R. A. CHRISTIAN ETAI. 2,644,635

CONTROL MECHANISM FOR ACCOUNTING MACHINES original Fuea'nw. s. 1947 12 Sheets-Sheet 4 INVENTORS RAYMOND A. CHRISTIAN a JESSE R. GANGER- BY M THElR (Iftornegs R. A. CHRISTIAN Ermi 2,644,636

CONTROL MEGHANISM FOR Accoun'rmc: MACHINES 12 Sheets-Sheet 5 July 7,v 1953 @riginal Filed Dec', 6, ,19517 2019 201s 206 f 201 208| @i 2014 2052 2011 INVENTORS RAYMOND A. CHRISTIAN 8x JESSE R. GANGER THEIR Ctomegs July 7, 1953 R. A. CHRISTIAN ETAL CONTRGL MECHANISM FOR ACCOUNTING MACHINES Original Filed Deo. 6, 1947 1re sheets-sheet e INVENTORS RAYMOND A. CHRISTIAN a JESSE R.GANGER THElR Gttornegs July 7, 1953 R. A. CHRISTIAN ETAL. ,2,644,535

CONTROL MECHANISM FR CCOUNTING MCHINES original Filed Dec. e. 1947 12 sheetssheet 7 A, 1:5 J2 5 (J 2 A|55, FIG I4 azv 2o5`""*-\ ,'22'6 22'8 2207 220e (REvERs'ETAsULATIoN) 3\ l (FoRwARD TAl'auLATloN) INVENTORS RAYMOND A. CHRISTlAN JESSE R. GANGER THEIR (lttorneqs July 7, 1953 R.. A.. CHRISTIAN ETA. 2,644,636v

CONTRQL MEGHANISM' FOR ACCOUNTING MACHINES Original Filed Dac. 6, 1947 12'Sheets-Sheet 8 .405 Fllgc INVENTORS RAYMOND A. CHRISTIAN JESSE R. GANGER THEIR (Ittornegs R. A. CHRISTIAN ErAL coNTRoL MECHANISM FOR ACCOUNTING MACHINES original Filed Dec. e, 194? July 7, 1953 12 Sheets-Sheet 9 INVENTORS RAYMOND A. CHRISTIAN 8x JESSE R. GANGER Dumm mula,

CNE

mem Gttornegs July 7, 1953 R. Ai CHRISTIAN ETAL 2,644,636

CONTROL MECHANISM FOR ACCOUNTING MACHINES original Filed Dec. 6. '1947 12 Sheets-Sheet l0 a JESSE R. GANGER THEIR (Ittornegs July 7, 1953 Fe A. cHmsTlAN An. 2,644,635

' CONTROL umcmmrsMv FOR AccoN'rING MACHINES Original Filed Dec. 6. 1947 12 Sheets-Sheet 11 RAYMOND ACHRISTWI JESSE R. GANGER THEIR Gttornegs :MY 7, 1953 R. A, CHRISTIAN E1' Ag. 2,644,636

, JO'I'RJ... FOR ACCOUNTING MACHINES Original Filed DEG. 6, 12Sh6BtS-5Sh9et 12 ESORE g: -I y ENTORS g'@@@@@@@ mm? as .80 CD v CD B ll.

THEIR Gttomegsl Patented July 7, 19563 CONTROL MECHANIsM FOR ACCOUNTING MACHINES Raymond A.V Christian and Jesse R. Ganger, Day- -`ton, Ohio, assignors to The National 'Cash Register Company,- Dayton, Ohio, a corporation of Maryland Original application December 6, 1947, Serial No. 790,032.1*Divided and this application May 9, 21951', Sel'ial'NO. 225,311

f 14 claims. (o1. ass-60.47)

The present invention relates to Ycalculating machines and particularly to machines of the accounting or bookkeepingtype which are provided with a traveling paper carriage for supporting the bookkeeping forms and also for automatically controlling lthe various functions of the machine in accordance With` thecolumnar positioning of the carriage.

This application is a divisionof theco-pending application for UnitedStates Letters Patent filed onDecember 6, 1947, by Raymond A. Christian et al., Serial No. 790,032. Y l i In the business World of today, there are nearly as many different types of bookkeeping systems employed as'there are separate business organizations. It has, therefore, been necessary for the builders of bookkeeping or accounting machines to modify the designs of their ymachines frequently in order to adapt; them to the particular bookkeeping system employed by the prospective purchaser. These so-called customer Order machines are costly to build,l since certain portions of the machine must be practically handmade in order to furnish a machine having the desired characteristics.

Accordingly, it is an object of the present in-v Another problem confronting both the manufacturers and the users of accounting machinesy is the complexity of many of our/ present bookkeeping systems. Not only is it difficult to construct machines Which are capable of performing the many and complicated operations involved, but lit is also difficult for 'the operator of the machine to learn hovv to manipulate the various controls of the machine so as to properly perform the various operations involved in making an entry on the books. It is, therefore, a further object of the invention to provide a bookkeeping machine which will perform most of these operations automatically and'therefore 'require a minimum amount of time and attention on'the part of the operator of the machine. t

in order to better enable the machine embody- .ing the present invention tov handle the complicated present-day bookkeepingl procedures, it is provided with a large number of totalizers 2 which may be selected simultaneously in various combinations for either additional or subtraction, so as to Aenable postings to be made into a large number of separate accounts during a single machine cycle.

Another object of the invention resides in the provision of novel means for controlling the various functions of the machine either from the traveling paper carriage, from the several motor bars for `initiating cycles of operation of the machine, or from certain of the manipulative keys situated on the vkeyboard of the machine.

A further object of the invention is to provide a plurality of slides operating under the control of vthe motor bars, the traveling paper carriage, and 'the motor bar control lever for controlling certain functions of the machine. This control mechanism is designedin such a manner that any of the controlling elements (motor bars, etc.) may be arranged to stop any of the slides in any of their various positions, thereby affording the maximum amount of flexibility in the control of the machine by this mechanism.

It is a further object of the invention to provide a novel mechanism for causing the reverse tabulating mechanism for the traveling carriage to be set into operation Vby a device which is actuated by the power-driven roller of the electric typewriter which forms 'a part of the present machine.

With these and other objects in View which Will become apparent from the following description, the invention includes certain novel features of design and combinations of parts, a preferred form or `embodiment of which is hereinafter described with reference to the drawings which accompany and form a part of this specification.

Figure l is a cross-sectional view taken through the traveling paper carriage of the machine, showing in particular the front feed mechanism thereof. In this View, the mechanism is in its closed position.

Figure 2 is aright side view of the paper feeding mechanism mounted on the traveling carriage.

Figure 3 is a front View of the forward tabulating mechanismV provided in the present machine.

Figure 4 is a view showing a portion of the forward tabulating mechanism and also the means for controlling the operation of this mechanism from the Skip motor bar.

Fig-ure 5 is a front View of the reverse tabulation mechanism incorporated in the present ma-` chine.

Figure 6 is a detail View of one of the carriage stops which is used to control the various functions of the machine.

Figure 7 is a right side elevation of the paper feed clutch mechanism.

Figure 8 is a plan View showing the sensing levers which cooperate with the carriage stops for the purpose of controlling the various machine functions.

Figure 9 is -a view of the front feed clutch as it appears from the right-hand side of the machine.

Figure 10 is a right side elevation of the various motor bars and the cycle-initiating mechanism associated therewith.

Figure 11 is a `plan view of the mechanism illustrated in the preceding ligure.

Figure 12 is a right side view showing in further detail the construction of the cycle-initiating mechanism.

Figure 13 is a right side elevation showing the motor bars and the mechanism controlled thereby for controlling certain of the machine functions.

Figure 14 is a View illustrating indetail the control bythe motor bars and also by the traveling paper carriage over the reverse tabulating control mechanism.

Figure 15 is -a View which illustrates in detail the control by the motor bars and also by the Itraveling paper carriage over the forward tabulating control mechanism of the machine.

Figures 16a, land 16h are `diagrammatic views showing the control by the traveling paper carriage over the paper feed slide.

Figures 17u and 17D are diagrammatic views showing the control by the traveling paper carriage over the forward tabulation slide.

Figures 13a, 18h, 18e, and 18d are `diagrammatic views illustrating the control by the traveling `paper carriage over the reverse tabulation slide.

Figure 19 is a diagrammatic view illustrating the control by the carriage over the carriage throat slide.

Figure 20 is a right side view showing the means by which the motor bars and the ytraveling paper carriage control the lpaper-feeding mechanism of the machine.

Figure 21 is a view showing the means whereby the motor bars and the traveling paper carriage control the carriage throat mechanism of the machine.

Figure 22 is a perspective view `of the complete machine.

Figure 23 is a plan view of the keyboard of the combined typewriting and accounting machine disclosed herein.

Figure 24 is a front view of a portion of the motor-drive mechanism for the machine.

GENERAL DESCRIPTION Certain of the principles and features of the machine hereinafter to be described are disclosed in the following United States patents:

1,197,276 September 5, 1916 -Halcolm Ellis 1,203,863 November 7, 1916---- Halcolm Ellis 1,819,084 August 18, 1931 Emil John Ens 2,038,717 April 28, 1936 Raymond A. Christian 2,079,355 May 4, 1937 Charles L. Lee 2,181,975 December 5, 1939 Charles L. Lee 2,189,851 February 13, 1940 Paul H. Williams et al.

4 2,217,221 October 8, 1940----Jesse R. Ganger 2,243,806 May 27, 1941 Laurence N. Lehman 2,316,520 April 13, 1943 Henry F. Lang Reference is also made to United States Letters Patent No. 2,442,402, issued June 1, 1948, to John T. Davidson et al. and entitled Accounting Machines, for a further disclosure of certain of the features incorporated in the machine to be described hereinafter.

The basic structure of the present machine is patterned Vafter the machine shown in the foregoing patents, which has been on Ithe market for many years. For example, the construction and arrangement of the keyboard, the differential actuators, the printer, and 'the totalizers are practically identical with `the corresponding mechanisms shown in the patents. The basic structure of the prior art machine is ldisclosed in the Ellis Patent No. 1,197,276, while an addsubtract totalizer of the same general type as that used in the present machine is disclosed in Ellis Patent No. 1,203,863. The totalizer engaging and disengaging mechanism, on the other hand, is shown in the above-mentioned Davidson et al., Patent No. 2,442,402. Most of the mechanism-s for controlling the various machine functions, however, are new in the subject machine, as are also the paper carriage andthe controlling mechanisms therefor. In addition, the instant machine is equipped with an electric typewriter which is driven by the same motor that operates the remain-der of the machine. With this brief overall description in mind, the various parts of the machine will now be described in detail, so as to provide a full and complete understanding of the entire device.

GENERAL ORGANIZATION AND CABINET (Figure 1) A perspective View of the machine as a whole is shown in Figure 22 of the drawings, and a general understanding of the layout and organi- Zation of the machine may be obtained from this illustration. As shown herein, a typewriter keyboard is located at the front end of the machine, while just behind and somewhat above this key- ,board is an amount keyboard on which may be set up the various amounts which are to be entered in the accounting machine. To the left of the amount keyboard is a control keyboard containing the various function control keys, while to the right of it are located a plurality of motor bars and carriage control keys. In Ithe center, just above the amount keyboard, are a group of type sectors for the accounting machine, while just to the left of these sectors is located a type basket for the electric typewriter.

Immediately behind the aforementioned printing mechanism is a rotatable platen in which accounting forms and/or other record material may be supported, this platen being mounted on a traveling carriage which is movable back and forth across the machine. Behind the paper carriage is shown that part of the machine cabinet which houses the add-subtract totalizers. At the front of the machine, just to the left of the typewriter keyboard, is a switch lever for starting and stopping a continuously running electric motor, which drives the various operating mechanisms of the machine.

As shown in Figures 22 and 23, the operating mechanism of the machine is housed in a cabinet made up of several separate sections, each of r which is independently removable in order to yield access to the part of the machine lying thereunder. piece 200, extending across the front of the machine and having a central opening therein for accommodating the keys of the typewriter mechanism. Located on either side ofthe machine are side plates 201 and 202, immediately behind which are located additional side plates 203 and 251i, which cover the sides and part of theA top of the tctalizer section of the machine: The top of the totalizer section is further covered by a plate which also extends down overlitsv rear end and, together with similarly downwardly-extending portions on side pieces 203 and 204, serves to cover the rear of the machine.VV 1

The thus-constituted accounting machine cab-I inet is further complemented by keyboard cover plates 206, 2111, and 208, which are provided with apertures through which extend theupper ends of barrel-type key caps. To the rear of the keyboard and extending across the machine between the side pieces 20| and 202 is an angular strip of metal 259, which encloses a carriage control mechanism which will be described in detail in a subsequent portion of this description.

FRAMEWORK (Figures 1, 8, and 20) between the upper portion of the side frames and.

connected thereto is an angle bar 216 (Figure 8), which serves to support the forward part of the carriage as well as the carriage control mechanisms cooperating therewith. Located behind tne angle bar 2|B and supported by the side frames is a rail 211 (Figure 1) for supporting the rear portion of the carriage. The angle bar 216 andthe rail 211 are secured to the side frames 214' and 215 by screws. The base, the side frames, and the cross pieces for supporting the carriage constitute the main framework of the machine, although there are, of course, numerous sub-frames secured in one way or another to these main frame elements for supporting the various operating mechanisms of the machine.`

These sub-frames will be described in connection with the mechanisms which they support as the description proceeds. v Y

MOTOR DRIVE` (Figures 12, 13, 22, and 24) l A The various operating'mechanisms ofthe present machine are driven byv an electric motorV 220 (Figure 24) secured to theunder side ofthebase 213. As previously mentioned herein, the' motor is adapted to operate continuously while-the machine is in use and may be turned on or ofi by means of a single-pole, single-throw toggle switch, which may be operatedfrom the front of the machine by means of a lever 222 (Figure-'22)- operably connected therewith. A speed control deviceor governor (not shown) is lprovided onthe rear end of the motor shaft for the purpose-of` This cabinet is composed of a front.'

maintaining thespeed of the motor essentially vconstant under the varying load encountered. this type of service, On the front end ofthe motor shaft 223 (Figure 24) is secured a wormy 224, which meshes with aA worm wheel 225 pinned to a` shaft 22 6., which is journaled'at .either end on bearings (not shown) provided in` theside walls of a gear casing 221, which is secured. by bolts 228 (only one shown) to the frame of the. motor 220 and by other bolts 22,9 (only one shown in Figure 24) to the under side of. the base 21.3.,

Hence, whenever the motor is running, the shaft 2261 will be driven at a reduced rate of speed through the worm 224 and ther worm wheel 225.

to a metal ring (not shown), which is rigidly sef cured to the wheel 255. The wheel 250 isrotatably mounted on a main cam shaft 253 of roller bearings (not shown).

The gear 242 and the notched wheel 250 may be engaged with the main cam shaft 253 so as to cause the shaft to be given cycles of operation.

The means for engaging the gear and the wheel with the shaft 253 comprises a disc 255 having a stepped hub 256, which is pinned to the shaft 253-.

Loosely mounted on the step of the hub 25S is aclu'tch control arm 251, which is urged clockwisey on the hub 256 by means of a spring 258-con nected between the arm and the disc255. The arm 251 is normally prevented from rotation in a clockwise direction under the infiuence of the spring 258 by means of a tripping arm 259, the end of which cooperates with an extension 250 of the arm 251. The tripping arm 255 is secured to the left-hand end of a short shaft 21|, which is rotatably mounted in the machine frame and may be caused to rotate in a clockwise direction, so as to release the arm 251 to the influence of the spring 258, under the control of the several motor bars of the machine and certain other machine operation control mechanisms to be described later herein.

The upper portion of the arm 251 is providedl with gear teeth 212, which mesh with corresponding gear teeth formed on a headed portion 213 of a clutch dog 214 journaled in the disc 255i nea-r its periphery. The dog 214 passes through the disc 255 and projects intov the path of a series of notches 215 provided around the periphery of the wheel 250. The under side of the dog is flattened so that it will clear the wheel and the notches when the dog is in the position shown in Figure 12. However, when the tripping arm 25d is' moved away from the extension 258, the arm 251 will beV rotatedy clockwise under the influenceof' the spring 258, and the dog 214'will be rotated dog 214, its upper half is surrounded by a bushing` 211, which is secured to the disc 255. l Secured to the right-hand end of the shaft 211 `is a two-armedv lever 218 (see Figurel) the rearby means Wardly-extendi'ng' arm of which is provided with a roll 219 and the forwardly-extending arm of which is bifurcated and engages with a stud 200 located in the lower end of a lever 28 l. The lever 28| is secured to the right-hand end of a shaft 282 journaled at one end in the side frame 2|5 and at the other end in a vertical bracket 203 (Figure 14), which is spaced to the right of the side frame 2|5 and secured to the base 213 by screws passing through bent-over feet 284. The lever 28| and the shaft 202 are urged counterclockwise by a spring 205, stretched between a stud in the lever 28| and a stud mounted in the side frame 2|5. Hence, the spring 205 constantly tends to move the tripping arm 259 clockwise out of engagement with the extension 200, so as to engage the clutch and cause the main cam shaft 253 to be rotated clockwise, as viewed from the right-hand side of the machine.

The main cam shaft 253 extends transverseh7 across the machine beneath the base 2|3 and is journaled at either end in roller bearings (not shown), which are mounted in brackets (not shown) secured to the under side ci the base.

The cam shaft 253 has secured thereto a large number of cams for controlling various machine functions. Secured to a sleeve near the righthand end of the cam shaft is a tripping arm re storing cam 290, which normally rotates in unison with the cam shaft 253. As shown in Figure 13, the cam 290 is provided with a lobe which engages with the roll 219 on the lever 210 at the end of one revolution of the cam shaft to thereby rotate the shaft 21| counter-clockwise and move the tripping arm 259 back into the path of the extension 250 on the clutch control arm and so cause the clutch to be disengaged. The shaft 21| and the arm 259 are retained in their restored positions, against the urgency of the spring 285, by means of a mechanism which will be described later on herein in connection with the motor bars of the machine.

In order to insure that the main cam shaft will complete its movement into its home position. after the clutch has been disengaged, a homing cam 292 is secured to the cam shaft 253 (Figure 12) and is provided with a camming face 290, which cooperates with a roller 294 .mounted on a pivoted lever 295, which is biased by a strong spring 296 in such a direction as tc press the roller against the camming face 293 and thereby rotate the shaft 253 into its home position, as shown in Figure 123, where the roller seats itself in a slight depression formed in the face of the cam.

From the foregoing description it will be noted that the cam shaft 253 will be positively driven by the electric motor 220 through one revolution in a clockwise direction (as viewed from the right-hand side of the machine) each time the clutch is engaged.

MOTOR BARS PER SE (Figures ,10, 12, 23, 22, and 23') As mentioned earlier herein, the present machine is provided with a plurality ci motor bars located on the right-hand side oi the keyboard (Figures 22 and 23), which serve to initiate operations of the machine and also to control certain functions thereof, as will be fully described in a subsequent section ol this specication. The mechanism controlled by the several motor bars for causing the main clutch to be engaged and the machine to be operated is shown in Figures and 12, As shown in these figures, the ma- S chine is provided with a Main motor bar 2050, a Skip motor bar 205|, and a Vertical motor bar 2052, which motor bars are slidably mounted on studs 2053 secured to the right side frame 2|5. In the case of the motor bars 205| and 2052, an auxiliary slide 2054 is slidably mounted on the studs 2053 adjacent to the stems oi the motor bars. Each slide is provided with a vertical slot 2055, which cooperates with a stud 2056 secured in the stem of the associated motor bar 205| or 2052. Each slide is normally maintained in its raised position with the stud 2056 seated in the lower end of the slot 2055 by means of a spring 2051 stretched between the slide and a stud 206| secured to a latch 2058 pivotally mounted on a stud 2059 secured to the right side frame. In each instance, the latch 2058 is adapted to cooperate with a notch 2060, formed in the edges of the slides, to thereby retain the latter in their lower positions whenever their associated motor bars are manipulated. Hence, depression of either of the motor bars 205| or 2052 will cause the slides associated therewith to be carried down and retained by the latches 2058, while the motor bars themselves will be permitted to return to their raised or normal positions by means of restoring springs 2062.

Each slide 2054 is-provided with a formedover ear 2053, which engages with a iinished pad formed on the top edge of a substantially horizontal link 2064. Similarly, the main motor bar 2050 is provided with a formed-over ear 2065, which engages with another finished pad provided on the upper edge of the link 2004. The link 2004 is carried by a pair of bell crank levers 2000, which are pivctally mounted on studs 2061 secured to the side frame 2|5. As shown in the drawings, the link is pivotally connected at either end to one of the horizontally-extending arms of the bell crank levers, while the depending arms or these levers are connected together by a link 2068, thereby causing parallel movement of the link `2004.

Mounted on the link 2064 is a stud 2010, on which is pivotally mounted a pressure arm 201i, which is provided with a ringer 2012, which is urged into engagement with a spring stud mounted on the link 2064 by a spring 2013. The pressure arm 201| is provided with a bent-over ear 2014 (see also Figure l2), which lies above the left-hand end of a lever 2015 pivotally mounted on a stud 2016 secured to an auxiliary frame plate 2083 (Figure 13), said lever being urged clockwise about the stud by means of a spring 2011. The lever 2015 carries a square stud 2018, which cooperates with a notch 2019 formed in the lower edge of a clutch control slide 2080 supported for horizontal sliding movement on studs 200| and 2082 mounted in the auxiliary frame plate 2083. The slide 2080 carries a stud 2084, which is engaged within a bifurcation provided in the upper end of an arm 2035 secured to the shaft 282. Hence, the slide is constantly urged toward the front of the machine by means of the spring 285, but such movement is normally prevented by engagement of the square stud 2018 with the rear end of the notch 2019. Whenever any of the motor `bars are depressed, however, the link 2064 and the pressure arm 201| will be moved down so as to cause the ear 2014 to engage the end of the lever 2015 and move the square stud out of engagement with the notch on the slide,`

the influence of the spring 285. At the same time, the arm 2085, the shaft l282, .the arm 28|, the lever k218, and the shaft 21| disengage the tripping arm 259 from'the extension 260 of the clutch control arm, 'thereby causing the clutch to be engaged and the machine to be given a cycle of operation by the electric motor. A cycle of operation consists of one clockwise revolution of the main shaft 253' (Fig. 13) near the termination of which the restoring cam 290 engages the roller 219 and restores the arm 259 into the path of the extension 200 to cause the clutch to be disengaged and rotation of said shaft 253 terminated.

Since it is ordinarily desirable to cause the machine to come to rest at the end of `each cycle of operation, even though the motor bar be held depressed by the operator, means Visprovided for enabling the square stud to reengage the notch in the control slide uwhen the latter member is restored toward the end of the cycle by means of the restoring cam 290 (Figure 13). It will be noted from Figure 12 .that the forward edge of the arm 2085 engages .the ear 2014 and thus causes the ,pressure arm 201| to be rocked clockwise against the tension of the spring 2013 when the slide is released for forward movement. This will cause the ear to be moved off the `end vof the lever 201.5, thereby permitting the spring 2011 to urge the square stud into engagement with the lower edge of the slide 2080. Hence, when the slide is restored near the end of the cycle, the square :stud again engages the notch 2019 and retain-s the tripping arm 259 in engagement with the extension 260 even though .the motor bar be held depressed. When this motor bar vis released, the pressure arm will again move to its rai-sed position,and the spring 2013 will cause the ear 2014 to move over the end of the lever 2015, thus restoring the parts to the positions shown in Figures 12 and 13.

In order to release the auxiliary slides 2054 from the restraint of the latches 2058 near the end of the machine cycle, the slide 2080 is provided with a pair of latch-releasing .fingers 2086, which will engage the studs 208| on the latches as the slide is restored toward the end of the cycle to thereby disengage the latches and permit the `auxiliary slides to be restored vto their inactive positions by the springs 2051.

MOTOR BAR. CONTROL OF FUNCTIONS (Figures 11, 14, 15, 16, and 21) In addition to initiating cycles of operation of the accounting machine, the motor bars are also effective to control certain functions of the machine, thereby enhancing the automaticity and flexibility of the mach-ine. The mechanism for accomplishing this is shown in Figures 11, 14, 15, 16, and 21'and is com-posed of four function control slides 2|80 to `2|83 inclusive, which sense the depressed motor bars and are then themselves sensed by a feeler mechanism which controls the functioning of the machine. Each slide and its related mechanism will now be described in detail, so as to afford a complete understanding of the manner `in which .certa-in functions of the machine are controlled by the three motorbars 2050,205I, and 2052.

yREVERSE TABULATIVNG iCONTROL In Figure 14 is shown the slide 2|8'0, which controls the reverse tabulation mechanism of the machine and may therefore be referred t 10 as the reverse tabulation slide. As sho-wn in this figure, the slide is provided with elongated slots by means of which it is slidably mounted on the studs 208| and 2082. The slide is resiliently urged toward the iront of the machine by aspring 2|84 but is normally retained in its rearward position against the urgency of this spring by a rod 2|85, secured in the upper end kof a lever 2|86, which is pivotally mounted on a stud 2|81 secured to the auxiliary frame plate 2083 (Figure 13). To the lower end of the lever .2|86 is pivotally connected the forward end of a link 2|88, the rear end of which is pivotally connected to the upper end of a follower arm 2|.89, which is freely rotatable on the shaft 023 .and is provided with roll-s which cooperate with a pair of companion plate cams 2|90 and 2| 9|, which are secured to the main cam shaft 253. Hence, during each cycle of operation of the machine, the rod 2|85 will be moved toward the front of the machine, thereby permitting the slide ,2180 to be movedforwardly under the influence of the spring 2 |84.

The lever 2 |86 also carries an aliner bar 2 |92, which is adapted to .engage the aliner notches 2|93 formed in the lower edge of the slide, so as to aline vand hold the slide firmly in the position which it has assumed while it being sensed by the feeling mechanism to be described presently.

The forward movement of the slide under the influence of the spring 2|84 is adapted to be controlled by the three motor bars, the upper ,edge -of the slide having shoulders 2200, 220|, and 2202 4formed thereon, which are adapted to cooperate ,with the formed-over ears 2063 and l2065, actuated by the motor bars.

Before proceeding farther, it should be pointed out that `each of Vthe motor bars may be depressed to either one of two positions at the discretion of the operator. The first position, which is hereafter 4referred to as the touch position, is `effected by applying a light pressure into this position and hold them there.

different pressures on the motor bars are progage againstthe forward end of its associated vided by a mechanism illustrated in Figure 10,

which comprises alink 2203 slotted at either end, the slot in the forward end cooperating with a stud 2204 secured to the right side frame 2|5, and the slot in the rear end cooperating with a stud 22.05 secured tothe lower end of the rear bell crank -lever 2066. In the normal position of lthe parts, a spring 2206 urges the stud 2205 into engagement kwith the forward end of its associated slot, while the stud 2204 is engaged withv the rear end of vits slot. When any one of the 'three lmotor bars is depressed, the bell crank 2066 will be rotated counter-clockwise, and the link 2203 will be' moved toward the rear of the machine, thereby causing the stud 2204 to en- .s`lot. After this idle movement of the link has taken place, any further depression of the motor bar-s rwill cause the relatively heavy spring 22'06to'be stretched as the stud 2205 moves toward `the' rear end of .its slot. Thus, a much greater pressure must be applied to the motor barstogive themthe ysecond increment of movement, and consequently the operator of the ma- .chine'will have no -difliculty in feeling the two the dot-and-dash lines applied to the lower ends oi' the ears 2060 and 2005. It is further to be noted that the latches 2058 (Figure l) will enthe notches 2050 formed in the slide 2054 after the motor bars 205| and 2052 have been depressed to their touch positions, thereby causing the slides to be retained in the touch position after the bars have been released.

It is believed evident from the foregoing discussion that the slide 2|80 may be stopped in any one of a plurality of positions under the control of the motor bars by suitably locating the shoulders 2200, 220|, and 2202 thereon with respect to the ears 2053 and 2065, and by forming the shoulders with either a high profile or a lower proiile so as to engage the ears in either the touch position or the hold position, respectively, of the motor bar.

The slide having thus been differentially positioned under the control of the motor bars, its positioning is then sensed by a sensing lever 2201 (Figure 1,4) pivotally mounted on a stud 2208 secured. to the right side frame 2|5. The feeler is urged counter-clockwise about said stud by a spring 2209 stretched between the lever and av 'bracket 2210 fastened to the right side frame.

When the machine is at rest, the sensing lever is held in the position shown in Figure 14 by a stud 22| I engaging with a heel 22 I2 formed on the lower end of a depending arm of the sensing lever. The stud 22I| is mounted in the upper end of a follower arm 22 I3 (see Figure 20), which is pivotally mounted'on the shaft 923 beside the follower arm 2|89 and which carries at its lower end a roll 2.2| 4, which engages the periphery of a plate cam 22I5 secured to the main cam shaft 253. Hence, when the machine is put through a cycle of operation, the follower arm will be rocked clockwise, so as to release the sensing lever 2201 to the pull of the spring 2209 and thereby cause a sensing finger 22H5, formed on the left-hand end of the lever, to feel a series of graduations formed on the rear end oi" the reverse tabulation slide. The graduations are indicated collectively by the reference number 22|1 and are marked as follows in Figures 18a-d: #2 stop; #3 stop; #4 stop; and Inactive The sensing lever 2201 bears a stud 22|0, which. lies above an arm 22|9 formed on the pitman |541. Hence, when the sensing lever feels one of the graduations on the slide, the stud 2218 will engage the arm 22|9 and carry the pitman down with it to rock the lever |542 (Figure to cause said lever to set the reverse tabulation stop arm |520 in position to cooperate with either the #4, the #3, or the #2 reverse tab stops |398, |391, and |396, respectively. The reverse tab stops |396, |391, and |398 are carried by the corresponding carriage stops |314 (Figure 6) adjustably connected to a stop bar |315 in turn removably fastened to a traveling carriage |26I (Figures 1 and 22) mounted for horizontal shifting movement on the machine framework. The carriage is movable in either a forward' tabulating direction or a reverse tabulating direction by a yieldable hydraulic driving mechanism, which is in turn driven by the operating motor.

Simultaneously with the lifting of the arm |520, the lever |542 also engages and rocks the lever |522 clockwise (Figure 5) to cause the hydraulic driving mechanism to drive the carriage in a reverse tabulating direction, which movenient is terminated by the selected stop contacting the face |555 of the arm |520.

In order to prevent an overthrow of the pitman as a result of the rather high-speed sensing movement ci' the lever 2201i, the pitman is provided with a Aformed-over ear 2220, which is adapted to cooperate with a series of graduations 222| formed in the rear end of the slide 2| S0 and positively stop the downward travel of the pitman at the proper point.

In Figure 14, the set-up ofthe shoulders 2200, 220|, and 2202 is such that the slide will be blocked against forward movement when either of the motor bars 205| or 2052 :is depressed. I-Ience, the sensing lever 2201 will be held up by the high spot on the slide, which lies beneath the sensing linger 2245 when the slide is in its home position, as shown in Figure i4.' The reverse tabulation mechanism will therefore remain inactive when either of these two motor bars is operated. In the case of the main motor bar 2050, however, the shoulder 220| is placed somewhat to the rear of the ear 2065, thereby permitting forward movement of the slide. The profile of this shoulder, however, is sufficiently low to permit the shoulder to pass beneath the ear 2065 when the motor bar is moved to its touch position, and in this case the slide will move all the way forward in the machine, and the graduation 22H marked O will be positioned beneath the finger 22|9, so as to prevent any sensing movement of the lever 220i. I-lence, when the main motor bar is moved to its touch position, a reverse tabulation operation will not take place unless there is a control plate |405 mounted in the carriage stop i314 in this particular columnar position, which will cause the slide to be stopped in one of its intermediate positions. This control by the traveling carriage is exercised by way of a control lever 2222 (Figure i4) which is pivotally mounted on a stud 2223, which is supported between the auxiliary frame plate 2083 (see Figure i3) and the subsidiary plate 2095. The rear end of the control lever is pivotally connected to the lower end of a link 22.24, which is pivotally connected at its upper, end to the right-hand end of the sensing arm |940 (Figure S) The sensing lever 2222 has formed thereon a stop finger 2225, which is adapted to cooperate witha series of graduations 2226 `formed on the slide 2h30. As shown in Figures 18a to 18d inclusive, the reverse tabulation slide will be stopped in one of its four moved positions, depending on the length of the control plate |405. This will cause the stop arm |520 (Figure 5) to be set into a position plate |904. i

Referring once again to theear 2965 on the main motor bar 2050, it will be noted that, if the motor bar is moved to its hold position, the ear will then be in position to engage the shoulder 220| and stop the slide in a position where the sensing finger 22|5will engage the S graduation 22 I1, thereby causingv the stop arm I 520 to be elevated into a position to cooperate with either a #3 or a #4 reverse'tab stop. It should be noted that no provision is made for setting the reverse tabulation mechanism to cooperate with indicated by the legends in Figures 17d and 171),

While in the preferred embodiment of the in? vention, as shown and described in the present drawings, the reverse tabulation slide has been provided with abutments for cooperating only with the ears 2003 and 2065, it is to be observed that the stems of the motor bars 205| and 2052 are provided with formed-over ears 2223 (Figure 14), which may be arranged to cooperate with abutments similar to abutments 2200, 220|, and 2202 for controlling the positioning of the slide 2|80. For example, the slide may be made, as shown in Figure 18h, with a shoulder 2229 for cooperating with the ear 2003 on the slide 2054 associated with 'the Vertical motor bar 2052 and with a shoulder 2230 for cooperating with the ear 2228 provided on the stem of this motor bar. Hence, if this motor bar is tapped lightly with the fingers (i. e., not held down),-the ear 2223 will move down but will be immediately restored to the position shown in Figure 18h, whereas the ear 2003 will be held down in its touch position by the latch 2058 and will therefore be effective to cooperate with the shoulder 2229 to stop the slide in its S or #3 stop position, as shown in the figure. On the other hand, if the operator depresses the Vertical motor bar 2052 and retains it depressed throughout the machine cycle, the ear 2223 will engage the shoulder 2230 and thereby cause the slide to be stopped in its ,T or #2 stop position. Thus, additional ilexibility of control by the motor bars may be obtained, if desired, by providing additional stop shoulders on the slide 2|00 for cooperating with the ears 2220.

FORM/'ARD TABULATING CONTROL The means whereby the motor bars may control the forward tabulation mechanism includes the forward tabulation slide 2 |8| (Figure 15) slidably mounted on the studs 208| and 2082 and urged toward the front of the machine by a spring, the same as the slide 2 |80. The forward tabulation slide is normally held in its home position by the rod 2|05 but is released thereby during the cycling of the machine so as to permit it to sense the motor bars, after which it will be alined by movement of the bar 2|02 into alining notches provided along the lower edge of the slide, all as described above in connection with the reverse tabulation slide. On the rear end of the slide is provided a series of graduations 223|, which are adapted to be sensed by a sensing lever 2232, which has a sensing finger 2233 formed thereon for engaging the graduations. This sensing lever is, like the sensing lever 220i', pivotally mounted on the stud 2203 and urged to rotate counter-clockwise by a spring 2234, which rotation, however, is controlled by the stud 22|| mounted in the upper end of the cam follower arm 22 |3. v

The sensing leveris connected by a wire link 2235 to the lifting lever |464 (see Figures 3 and 4) to thereby control the setting of the tab stop arm |426 in relation to the forward tab stops 38| and |392 carried by the stop |314 (see Figure 6). As

step of forward movement, and a normal tabulaty f ing operation whenthe slide is permitted 'to lmove two steps forward. As in the caseof the reverse tabulation slide, the forward movement of the slide 2I8| is controlled by the motor bars, the

4slide being provided with abutment shoulders 2236, 2231, and 2238 for ycooperating with the vbent-over ears2063 and 2065. With the arrangement illustrated herein, when the Skip motor bar is depressed, the slide will be blocked against any forward movement, and a skip-tab operation will therefore result. When the Vertical motor barV is operated, the slide will be permitted to ymove one step toward thel front of the machine,

Vthereby preventing any setting operation of the tab stoparm |420 and hence causing a non-tab operation to take place. When the Main motor bar is moved to its touch position, the shoulder All 2231 will move beneath vthe ear 2065 andthe slide will be permitted to move all the way forward in the machine, thereby causing a ynormal tabulating-operation. However, if the Main motor l:bar is moved to its hold position, the slide will be stopped after it is moved one step forwardly in the machine, and a non-tab operation will ensue.

As in the case'of the reverse tabulation slide, the forward tabulation slide 2|8| may be controlled from a carriage stop, there being provided for this purpose a control lever 2239 (Figures 15, 17a, and 17h), which is pivotally mounted on a stud 2240 extending between the auxiliary frame plate 2033 and the subsidiary plate 2095. This lever is provided with a stop finger 224|, which is adapted to cooperate with a series of graduations 2242 formed on the upper `edge of the slide to thereby control the positioning of the slide. The rear end of the lever 2239 is pivotally connected to the lower end of a link 2243, the upper end of which is pivotally connected to the right-hand end of the sensing arm |939 (Figure 8) As schematically illustrated in Figures 17u and llb, an S length control plate |405, carried by the carriage stop |314 (Figure 6), will cause the lever 2239 to be positioned so as to stop the slide after it has moved one step forwardly, thereby causing a non-tab operation to take place, while an A length control plate |405 will elevate the stop nger to a position where it lies above the graduations 2242, thereby permitting the slide to move all the way forwardly and causing a normal tabulating operation to result. As illustrated by the dot-and-dash lines in Figure 17h, if no control plate is present, the lever will be elevated still more, so as to again permit a normal tab operation. However, if a T length control plate is present, the control lever 2239 will be very slightly elevated and the nger will cooperate with the first graduation, as illustrated in Figure 15, to thereby prevent any forward movement of the slide and cause a skip-tab operation to take place. In `order to rinsure that a reverse tabulation yoperation and `a forward tabulation operation may not both be initiated during the same cycle of operation under the control of their respective slides, the forward tabulation slide 2|8| is provided with an upstanding arm 2244, which is adapted to be engaged by a formed-over ear 2245 (Figures 14 and 15) on the sensing lever 2222 for the reverse tabulation slide. This ear will be effective to stop the tabulation slide 2 |8| after it has moved forward one step whenever an A, S, or T length control plate |405 is effective to control the lever 2222, while the ear will be elevated clear above the arm 2244 if no control plate is present. Hence, it will be impossible, as a result of inadvertent operation of either the to he ears 2053 and 2h65 on the motor bars.

Main motor bar or the Vertical motor bar, to cause both a forward tabulating operation and a reverse tabulating operation to be called for during the same cycle.

In order to permit a hold skip tab operation to be controlled from the Skip motor bar (Figure 10), the lower end of the stem of this motor bar bears a stud 2250, which engages an aperture formed in the forward end of a lever 225| pivotally mounted on a stud 2252 secured to the right side frame. The rear end of this lever is pivotally connected to the lower end of a link 2253 (see also Figure fl), the upper end of which is pivotally connected to the right-hand end of a depressor lever 2254 pivotally mounted on the stud 2|43. The left-hand end of the lever is provided with a rounded nose 2255, which is adapted to engage an extension 2256 formed on the right-hand end of the tabulating stop arm |426. The construction and arrangement of this mechanism are such that, when the Skip motor bar 205| is moved toits hold position, the nose 2255 will engage the extension 2256 and depress the arm |426 to its lowest eiective position (hold skip tab), in which the surface |421 is in the path of the stop |303. Hence, a direct connection is provided between the Skip motor bar and the tab stop arm whereby the latter will always be moved to its hold skip tab position whenever the motor bar is depressed and held in its hold position.

PAPER FEED CONTRGI.;

The paper feed slide 22H32, shown in Figure 2|), is mounted in the machine for sliding movement in. the saine manner as the 'two previously-described slides and is released for forward movement in the machine by the rod 2 M35 and is likewise restored thereby in the same manner as the previously ied slides. The rear end of the slide is provi ed with a notch 225'! and is adapted sensed by a sensing linger 2.253 provided on the forward of a sensing lever 2259, which is pivotally ino-tinted on the stud 2208 and is controlled by the stud 22H mounted in the follower arm 22H in the same manner as the previouslydescribed sensing levers 2201 and 2232. The lever 22560 has a rearwardly-extending arm, to which is connected. the upper end or a wire link 2260, the lower end of which is pivotally connected to an arm l freely pivoted on the carriage throat shaft i3. This arm is provided with a forwardlyextending finger 2262, which overlies the pin |61| carried by the arm |010, which is secured to the feed tube ltfl. Hence, if the paper feed slide is moved to such a position as to enable the sensing finger to enter the notch 2.251, the link 22h@ will be elevated, thereby causing the finger 2252 to depress the pin |61! and rock the tube counter-clockwise, so as to cause the paper feed clutch (Figure 7) to be engaged and operate the rail i125 (Figure l), which, through the mechanism shown in Figure 2, rotates the platen vroll to cause a line-spacing operation of said platen to result.

The paper feed slide is controlled in its forward movements by the shoulders 2263, 2264, and 2265, formed thereon, which are adapted to engage the As .shown in Figure 20, the ear 2083 on the Skip motor bar will move in front of the shoulder 2263 and block any forward movement of the slide whenever tliis rnc-tor bar is operated. Thus, the sensfinger 2252 will be prevented from moving downwardly, and a paper feeding operation will be prevented. If the Vertical motor bar is de- CII pressed, the ear 2003, formed thereon, will engage the shoulder 2265 after the slide has moved one step forwardly, thereby placing the notch 2251 beneath the finger 2258 and so causing a paper feeding operation to taire place. Similarly, the ear on the Main motor bar will engage the shoulder 2205 after the slide has moved one step forwardly, so as to cause a paper feed-- ing operation to result, provided the motor bar is depressed to its ,hold position and held there during cycling of the machine. However, if this motor bar is depressed to its touch position, the shoulder 226% will move beneath the ear 2065, and the high portion of the slide behind the notch 225i' will block the finger 2258 and prevent paper feeding.

This slide may also be controlled by the traveling paper carriage |2G| (Figures l and 22), there being provided for this p.,.rpose a control lever 225i` (Figures lds, im), and 20), which is pivotally mounted on the stud Z22-i0 and is provided with a stop linger 2201, which is adapted to engage a shoulder 2268 formed on the upper edge of the slide. The rear end of the lever 2226 is pivotally connected to the lower end of a link 2269, the upper end of which is pivotally connected to the right-hand end of the sensing arm H335 (Figure 8). As schematically illustrated in Figures 16a and 16h, whenever an S or a 1" length control plate 405 is present in the carriage Stop |314, the lever 2266 will be positioned so as to engage the shoulder' 225B and stop the slide after the latter has moved forwardly one step in the machine. rlhis will place the notch 2251 beneath the sensing linger 2253 and thereby cause a paper feeding opera-tion to take place. However, if an length control plate or no control. plate at all is present in the stop, the control lever 2266 will be elevated to a position where the finger 225i lies above the shoulder 2258, and the slide will 'therefore be permitted to move two steps forward, so as to place a high portion of the slide beneath the finger 2258 and thereby prevent a paper feeding operation.

CARRIAGE THROAT CONTROL The carriage throat slide 2.583, illustrated in Figure 2l, is operated in the same manner as the previously-described slides and is provided at its rear end with a shoulder 221|), which is adapted to be engaged by a sensing finger 22?! formed on the forward end of a sensing lever 2212 pivotally mounted on the stud 2206, the lever 2212 being controlled in its sensing movements by the stud 22| in the upper end of the arm 22|3. The lever 2212 has a rearward extension formed thereon, to which is pivotally connected the upper end of the wire link |188, which, when pulled upwardly, will, through the lever I 105, the link l, and the arm 19|, cause the carriage throat shaft |513 to be rocked counter-clockwise and thereby cause the carriage throat clutch (Figure 9) to be engaged and operate the rail |809 (Figure l), which, through the mechanism shown here, causes the front feed throat mechanism to be operated.

The carriage throat slide has provided along v its upper edge shoulders 22N, 22M, and 2215,

which are adapted to be engaged by the ears 2063 and 2065 of the motor bars. As shown herein, depression of either the Skip motor bar or the Vertical motor bar will cause the ears 263 to move in front of the shoulders 2213 and 2215 and thereby block forward movement of the slide 2|83. Thus, the sensing finger 221| will be pre- 

